Search: When search term is removed from a note the selected note changes

1. Click over the Search Box
2. Type any keyword that yields results, and open any your notes
3. Cut or delete the text from the current note that matches the search

As a result, the app will immediately take you to the next note.

Reproduce the search workflow in the macOS app: search for a keyword, open a matching note, and delete the matching text. Trace the search-result selection handling, then verify that editing away the term does not automatically select the next note.

Written by the indexing model from the issue text.